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Contogeniidae
Taxonomy
Contogeniidae was named by Nydam and Fitzpatrick (2009). It was considered monophyletic by Nydam and Fitzpatrick (2009).
It was assigned to Scincomorpha by Nydam and Fitzpatrick (2009).
It was assigned to Scincomorpha by Nydam and Fitzpatrick (2009).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 2009 | Contogeniidae Nydam and Fitzpatrick p. 678 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
Fm. †Contogeniidae Nydam and Fitzpatrick 2009
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G. †Palaeoscincosaurus Sullivan and Lucas 1996
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†Palaeoscincosaurus middletoni Sullivan and Lucas 1996
†Palaeoscincosaurus pharkidodon Nydam and Fitzpatrick 2009
G. †Utahgenys Nydam and Fitzpatrick 2009
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†Utahgenys antongai Nydam 2013
†Utahgenys evansi Nydam and Fitzpatrick 2009
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. L. Nydam and B. M. Fitzpatrick 2009 | Differs from all other lizard families in the following unique combination of characters: hypertrophied inferior alveolar canal forming shelf-like lateral expansion along posterior portion of dentary; tooth crowns truncated (i.e., ‘squared-off’); tooth crowns with anteroposteriorly directed apical groove; and lateral expansion of posterior process of maxilla. Differs further from Xantusiidae, including Palaeoxantusia, in having Meckelian canal open along medial face of dentary to the symphysis, but resembles both in having distinct coronoid articulation facet on medial surface of coronoid process on dentary, posteroventral process on dentary distinct and much larger than coronoid process, and posteroventral process on dentary extends back farther than coronoid process. Further similar to xantusiids in having a distinct, ventrally directed curvature of supradental shelf on maxilla behind tooth row. |